value	unc_up	unc_lo	author	ref	method
6.24	2.010	2.010	Nugent	2016AJ....152...63N	NEATM
6.89	2.310	2.310	Masiero	2021PSJ.....2..162M	NEATM
7.16	2.021	2.021	Masiero	2017AJ....154..168M	NEATM
7.29	0.170	0.170	Masiero	2012ApJ...759L...8M	NEATM